Fisher 733C-10 Air Pressure Regulator

Technical Specifications

Model：733C-10 Brand：Fisher Product Type: Spring operated instrument air pressure regulator

Module Feature

Fisher 733C-10 is compact spring-diaphragm type instrument air regulator. It reduces high inlet air pressure to stable preset output pressure for pneumatic loop components. Simple structure, easy on-site pressure adjustment. It provides clean and steady instrument air supply for Fisher valve positioners and pneumatic controllers. Widely used in oil,gas,chemical and power plant control valve pneumatic circuits.

Working principle: Diaphragm and spring balance to maintain constant outlet pressure Onboard components: Diaphragm assembly, pressure adjustment spring, valve plug & seat, adjusting knob, gauge port, aluminum body

LED indicators

Not equipped

Hardware self-diagnosis

Visual inspection, pressure setpoint test, output pressure stability test, air tightness leakage test

Programming software

No dedicated software required

Pneumatic & Mechanical Parameters

Medium:Dry instrument air Max inlet pressure:250psi Output pressure range:0~100psi

Mechanical & Structure

Mounting: Pipe mount or actuator bracket mount Protection class:IP66

Environmental

Operating temperature:-40℃ ~ +80℃ Ambient humidity:5~95% non-condensing Certification:CE Status:Fisher pneumatic air regulator

System compatibility

Compatible with Fisher DVC series digital valve controllers and traditional pneumatic positioners.

Function

733C-10 is instrument air regulator manufactured by Fisher. It stabilizes the supply air pressure for valve positioners. It absorbs pressure fluctuation from upstream air source and maintains constant outlet pressure, ensuring stable operation of downstream pneumatic instruments. It is standard auxiliary component for control valve pneumatic system.

Installation

Follow lockout/tagout safety procedure before installation. Isolate instrument air supply. Mount regulator on pipeline or actuator bracket. Connect upstream instrument air line. Rotate adjustment knob to set target output pressure. Test pressure stability and air tightness.

Interface

1/4"NPT inlet/outlet air ports, pressure gauge tapping port, mounting lugs, no LED indicators on 733C-10.

Diagnostic

Output pressure drifting: Spring fatigue or diaphragm damage. No air output: Internal seat stuck. External air leakage: Seal aging or threaded fitting loose.

Product Brief

733C-10 Fisher compact instrument air pressure regulator,for pneumatic valve positioner pressure reduction and stabilization,industrial control valve pneumatic accessory.